:root {
  --bg: #f5f7fa; --panel: #ffffff; --line: #e3e8ef;
  --fg: #1f2733; --dim: #6b7785; --accent: #2f6fed; --accent-ink: #fff;
  --ok: #1f9d57; --okbg: #e7f6ee; --danger: #d9534f; --dangerbg: #fbeaea;
  --hold: #b06a00; --pos: #1f9d57; --neg: #d9534f;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --radius: 8px;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg);
  font: 14px/1.5 system-ui, -apple-system, Segoe UI, Roboto, sans-serif; }

button { font: inherit; background: var(--panel); color: var(--fg);
  border: 1px solid var(--line); border-radius: 6px; padding: 5px 12px; cursor: pointer; }
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
button.danger { color: var(--danger); border-color: var(--dangerbg); }
button.small { padding: 2px 8px; font-size: 12px; }
button:disabled { opacity: .5; cursor: not-allowed; }

input, select { font: inherit; background: var(--panel); color: var(--fg);
  border: 1px solid var(--line); border-radius: 6px; padding: 6px 8px; }
input:focus, select:focus { outline: none; border-color: var(--accent); }
.mono { font-family: var(--mono); }
.dim { color: var(--dim); }
.small { font-size: 12px; }

.app { display: flex; flex-direction: column; min-height: 100vh; }

.topbar { display: flex; align-items: center; gap: 16px; padding: 10px 20px;
  background: var(--panel); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.brand { font-weight: 800; font-size: 16px; letter-spacing: -.01em; }
.spacer { flex: 1; }
.tabs { display: flex; gap: 4px; }
.tab { border: none; background: none; padding: 6px 10px; color: var(--dim); border-radius: 6px; }
.tab:hover { background: var(--bg); color: var(--fg); }
.tab.active { background: var(--bg); color: var(--accent); font-weight: 600; }
.who { color: var(--dim); }
.topbal { display: flex; align-items: center; gap: 10px; padding: 4px 10px; margin-right: 4px;
  background: var(--bg); border: 1px solid var(--line); border-radius: 999px; }
.topbal-amt { font-variant-numeric: tabular-nums; color: var(--fg); white-space: nowrap; }
.login { display: flex; gap: 6px; align-items: center; }
.login input { width: 130px; }

.content { padding: 22px; max-width: 1000px; width: 100%; margin: 0 auto; }
h2 { margin: 0 0 14px; font-size: 18px; }
.head-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.head-row h2 { margin: 0; }

.banner { padding: 10px 12px; border-radius: var(--radius); margin: 0 0 14px;
  background: var(--bg); border: 1px solid var(--line); }
.banner.err { background: var(--dangerbg); border-color: #f0c4c2; color: #8a2a27; }
.banner.ok { background: var(--okbg); border-color: #bfe6cf; color: #15663a; }

/* balance cards */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.card-ccy { font-weight: 700; color: var(--accent); margin-bottom: 10px; }
.card-row { display: flex; justify-content: space-between; padding: 3px 0; }
.card-row.total { border-top: 1px solid var(--line); margin-top: 6px; padding-top: 8px; }

/* tables */
.grid { width: 100%; border-collapse: collapse; background: var(--panel);
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.grid th, .grid td { text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--line); }
.grid th { background: var(--bg); color: var(--dim); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
.grid tr:last-child td { border-bottom: none; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.num.pos { color: var(--pos); }
.num.neg { color: var(--neg); }

/* status pills */
.pill { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px;
  background: var(--bg); border: 1px solid var(--line); }
.pill-succeeded { background: var(--okbg); color: #15663a; border-color: #bfe6cf; }
.pill-failed { background: var(--dangerbg); color: #8a2a27; border-color: #f0c4c2; }
.pill-processing, .pill-pending { background: #fff4e0; color: var(--hold); border-color: #f0dcae; }

/* forms */
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; max-width: 640px; }
.form label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--dim); }
.form label input, .form label select { color: var(--fg); }
.form .wide { grid-column: 1 / -1; }

/* list filters + pagination */
.filterbar { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 10px 14px; margin-bottom: 14px; }
.filterbar .fl { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--dim); }
.filterbar .fl input, .filterbar .fl select { color: var(--fg); padding: 5px 8px;
  border: 1px solid var(--line); border-radius: 6px; background: var(--panel); }
.filterbar .fl-actions { display: flex; gap: 8px; }
.pager { display: flex; align-items: center; justify-content: center; gap: 14px; margin-top: 14px; }

/* misc */
.center { display: flex; align-items: center; justify-content: center; height: 100vh; }
h3 { margin: 20px 0 8px; font-size: 15px; }

/* auth gate */
.auth-wrap { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 20px; }
.auth-card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
  padding: 28px; width: 100%; max-width: 380px; box-shadow: 0 8px 40px rgba(0,0,0,.06); }
.brand.big { font-size: 22px; font-weight: 800; }
.auth-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 18px; }

/* compact language switcher (top bar + auth card) */
.langsel { padding: 4px 8px; border: 1px solid var(--line); border-radius: 6px; }
.auth-tabs { display: flex; gap: 6px; margin-bottom: 18px; }
.auth-tabs button { flex: 1; background: var(--bg); border: 1px solid var(--line); padding: 8px; }
.auth-tabs button.active { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
.auth-form { display: flex; flex-direction: column; gap: 12px; }
.auth-form label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--dim); }
.auth-form input { color: var(--fg); }
.auth-form button { margin-top: 6px; padding: 9px; }
.auth-form.narrow { max-width: 380px; }

/* prefill row */
.prefill { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }

/* code blocks */
.code { position: relative; margin: 0 0 10px; }
.code pre { margin: 0; background: #0f1722; color: #e6edf3; border-radius: var(--radius);
  padding: 12px 14px; overflow-x: auto; font-family: var(--mono); font-size: 12.5px; line-height: 1.5; }
.code .copy { position: absolute; top: 8px; right: 8px; background: rgba(255,255,255,.1);
  color: #e6edf3; border: 1px solid rgba(255,255,255,.2); padding: 2px 10px; font-size: 12px; }
.code .copy:hover { border-color: var(--accent); }

/* payout detail modal */
.grid tr.clickable { cursor: pointer; }
.grid tr.clickable:hover td { background: var(--bg); }
.modal-bg { position: fixed; inset: 0; background: rgba(0,0,0,.4); display: flex;
  align-items: center; justify-content: center; padding: 20px; z-index: 10; }
.modal { background: var(--panel); border-radius: 12px; max-width: 640px; width: 100%;
  max-height: 85vh; display: flex; flex-direction: column; box-shadow: 0 12px 50px rgba(0,0,0,.25); }
.modal-head { display: flex; justify-content: space-between; align-items: center;
  padding: 14px 18px; border-bottom: 1px solid var(--line); font-weight: 600; }
.modal-body { padding: 16px 18px; overflow-y: auto; }
.kv { display: flex; justify-content: space-between; gap: 24px; padding: 5px 0; border-bottom: 1px dashed var(--line); }
.kv.narrow { max-width: 380px; }
.timeline { display: flex; flex-direction: column; gap: 8px; }
.tl-item { display: flex; flex-direction: column; gap: 2px; }
.logentry { border: 1px solid var(--line); border-radius: var(--radius); padding: 8px 10px; margin-bottom: 8px; }
.log-head { display: flex; justify-content: space-between; margin-bottom: 4px; }
.logentry pre { margin: 0; background: var(--bg); border-radius: 6px; padding: 8px; overflow-x: auto; }
.tag { background: var(--bg); border: 1px solid var(--line); border-radius: 4px; padding: 1px 6px; font-size: 12px; }
.errs { color: var(--danger); white-space: pre-wrap; margin: 0; }

/* toast */
.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: var(--fg); color: #fff; padding: 10px 16px; border-radius: var(--radius);
  box-shadow: 0 6px 24px rgba(0,0,0,.18); }
.toast.err { background: var(--danger); }